I came across this a while back and thought I'd share it here:

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http://www.youtube.com/watch?v…..pd60u79J6M

At 1:56 you also have to be careful about a crossed ankle lock.  I bet you could modify the way your feet are configured to pre-empt this as well.  But I really like the leg uncrossing trick at 2:46 and the shooting the knees under your opponent's hips at the very beginning.  Either way, this is a a really good technique to have in your bag of lock picks.